<?php
/**
 * Zend Framework
 *
 * LICENSE
 *
 * This source file is subject to the new BSD license that is bundled
 * with this package in the file LICENSE.txt.
 * It is also available through the world-wide-web at this URL:
 * http://framework.zend.com/license/new-bsd
 * If you did not receive a copy of the license and are unable to
 * obtain it through the world-wide-web, please send an email
 * to license@zend.com so we can send you a copy immediately.
 *
 * @category   Zend
 * @package    Zend_Crypt
 * @subpackage Rsa
 * @copyright  Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 * @version    $Id: Key.php 16971 2009-07-22 18:05:45Z mikaelkael $
 */

/**
 * @category   Zend
 * @package    Zend_Crypt
 * @copyright  Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 */
class Zend_Crypt_Rsa_Key implements Countable
{
	/**
	 * @var string
	 */
	protected $_pemString = null;

	/**
	 * Bits, key string and type of key
	 *
	 * @var array
	 */
	protected $_details = array();

	/**
	 * Key Resource
	 *
	 * @var resource
	 */
	protected $_opensslKeyResource = null;

	/**
	 * Retrieves key resource
	 *
	 * @return resource
	 */
	public function getOpensslKeyResource()
	{
		return $this->_opensslKeyResource;
	}

	/**
	 * @return string
	 * @throws Zend_Crypt_Exception
	 */
	public function toString()
	{
		if (!empty($this->_pemString)) {
			return $this->_pemString;
		} elseif (!empty($this->_certificateString)) {
			return $this->_certificateString;
		}
		/**
		 * @see Zend_Crypt_Exception
		 */
		require_once 'Zend/Crypt/Exception.php';
		throw new Zend_Crypt_Exception('No public key string representation is available');
	}

	/**
	 * @return string
	 */
	public function __toString()
	{
		return $this->toString();
	}

	public function count()
	{
		return $this->_details['bits'];
	}

	public function getType()
	{
		return $this->_details['type'];
	}
}